Gel electrophoresis can be used to separate molecules by

How many copies of each chromosomes should be present in each of the 4 final haploid versions of gamete?

What is the ecological role of food chains and food webs

The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer